Adds missing include.

net/quic/quartc/quartc_session.h

 // Copyright (c) 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_QUIC_QUARTC_QUARTC_SESSION_H_
 #define NET_QUIC_QUARTC_QUARTC_SESSION_H_
 
 #include "net/quic/core/quic_crypto_client_stream.h"
 #include "net/quic/core/quic_crypto_server_stream.h"
 #include "net/quic/core/quic_crypto_stream.h"
 #include "net/quic/core/quic_error_codes.h"
 #include "net/quic/core/quic_session.h"
+#include "net/quic/platform/api/quic_export.h"
 #include "net/quic/quartc/quartc_clock_interface.h"
 #include "net/quic/quartc/quartc_session_interface.h"
 #include "net/quic/quartc/quartc_stream.h"
 
 namespace net {
 
 // A helper class is used by the QuicCryptoServerStream.
 class QuartcCryptoServerStreamHelper : public QuicCryptoServerStream::Helper {
  public:
   QuicConnectionId GenerateConnectionIdForReject(
@@ skipping 104 matching lines @@
   std::unique_ptr<QuicCryptoClientConfig> quic_crypto_client_config_;
   // Config for QUIC crypto server stream, used by the server.
   std::unique_ptr<QuicCryptoServerConfig> quic_crypto_server_config_;
 
   DISALLOW_COPY_AND_ASSIGN(QuartcSession);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUARTC_QUARTC_SESSION_H_